Information Transparency & Storage

Every political advertisement served through our platform includes a built-in transparency layer. This page explains what information is disclosed to the public, how users can interact with it, and how campaign data is stored for regulatory compliance.

Transparency Page

While hovering over the Political Advertisement button on any ad creative, a tooltip displays key campaign details. If the user clicks the "More information" link within the transparency announcement, they are directed to a dedicated information page hosted by Phaistos.

This page provides full transparency into the entities and details behind the campaign.

Campaign Information

The transparency page presents detailed information for each of the following persons and/or entities involved in the campaign:

Campaign Info

Name, reference code, period, channel, budget, funding sources, and targeting techniques

Sponsor

The entity that commissioned the advertisement, including name, email, address, and VAT number

Paying Entity

The entity financing the campaign, with legal name, contact details, and VAT information

Controlling Entity

The entity exercising control over the sponsor, with full identification details

Connection With

The political or electoral context the campaign is linked to, including member state and regional details

Example of a transparency information page as displayed to the public.

Download Data

Users can download the full campaign transparency data in JSON format directly from the information page. This ensures that all disclosed information is machine-readable and easily accessible for auditing or journalistic purposes.

Sample JSON structure:

{
  "sponsorName": "Demo",
  "sponsorEmail": "demo@demo.com",
  "sponsorAddress": "Address info",
  "payerName": "Demo",
  "payerEmail": "demo@demo.com",
  "ownerName": "Demo",
  "ownerEmail": "demo@demo.com",
  "publicationStartDate": "2025-11-12",
  "publicationEndDate": "2025-12-31",
  "totalAmount": "111111",
  "currency": "Euro",
  "fundingSources": "Public",
  "id": "POL-EL-2025-DIGITAL-18375688967"
}

Excerpt from an actual transparency data file.

Creative Preview

The transparency page also includes a campaign creative preview, allowing users to view the actual advertisement associated with the campaign. This provides full visibility into the content being distributed.

Report an Advertisement

If a user suspects that a political advertisement does not comply with Regulation (EU) 2024/900, they can submit a complaint directly through the transparency page using the "Report this ad" button.

The report form collects the campaign reference ID, the reporter's name and email, and a detailed message explaining the concern. Phaistos ensures that all complaint information is properly recorded and stored in accordance with regulatory requirements.

Example of the ad reporting form.

Data Retention

All campaign information - including transparency records, creative assets, and any submitted complaints - is retained for a minimum of seven years, in full compliance with EU data retention requirements.